Finding the Fourth Proportional to 20,238,056.06, 27,928,738.95 and 11,070,698.90
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Solution
The fourth proportional to 20,238,056.06, 27,928,738.95 and 11,070,698.90 is: 15,277,685.70
Step by Step Solution
- Step 1: Write the proportion equation
20,238,056.06 : 27,928,738.95 = 11,070,698.90 : x - Step 2: Convert to fraction form
20,238,056.06/27,928,738.95 = 11,070,698.90/x - Step 3: Cross multiply
20,238,056.06x = 27,928,738.95 × 11,070,698.90 - Step 4: Simplify right side
20,238,056.06x = 309,190,659,572,152.19 - Step 5: Solve for x
x = 309,190,659,572,152.19/20,238,056.06 - Step 6: Final answer
x = 15,277,685.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.